| 命令名称 | 操作系统 | 特点 |
| os.system | Window & linux | 返回0正确，1错误 |
| os.open | Window & linux | 输出以文件返回 |
| commands.getoutput | Linux | 输出以字符串返回 |
Examples
import os
import commands
#(Support Windows & Linux) Popup DOS dialog in windows.
os.system("echo a>C:\\Localdata\\123456.txt")
#(Support Windows & Linux) No dialog popups
output = os.popen("dir C:\\LocalData")
print output.read()
for line in os.popen("dir C:\\"):
print line
#(Only support Linux)
output = commands.getoutput("pwd")